Paper tray



FIG. 1 is a side view showing our new design for a paper tray;

FIG. 2 is a front view of the a paper tray of FIG. 1;

FIG. 3 is the opposite side view of the a paper tray of FIG. 1;

FIG. 4 is a rear view of the a paper tray of FIG. 1; and,

FIG. 5 is a top plan view of the a paper tray of FIG. 1. 

The ornamental design for a “paper tray”, as shown and described. 